Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 1 | /* |
| 2 | * linux/drivers/ide/mips/au1xxx-ide.c version 01.30.00 Aug. 02 2005 |
| 3 | * |
| 4 | * BRIEF MODULE DESCRIPTION |
| 5 | * AMD Alchemy Au1xxx IDE interface routines over the Static Bus |
| 6 | * |
| 7 | * Copyright (c) 2003-2005 AMD, Personal Connectivity Solutions |
| 8 | * |
| 9 | * This program is free software; you can redistribute it and/or modify it under |
| 10 | * the terms of the GNU General Public License as published by the Free Software |
| 11 | * Foundation; either version 2 of the License, or (at your option) any later |
| 12 | * version. |
| 13 | * |
| 14 | * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, |
| 15 | * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND |
| 16 | * FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR |
| 17 | * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR |
| 18 | * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF |
| 19 | * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS |
| 20 | * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN |
| 21 | * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) |
| 22 | * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE |
| 23 | * POSSIBILITY OF SUCH DAMAGE. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along with |
| 26 | * this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 675 Mass Ave, Cambridge, MA 02139, USA. |
| 28 | * |
| 29 | * Note: for more information, please refer "AMD Alchemy Au1200/Au1550 IDE |
| 30 | * Interface and Linux Device Driver" Application Note. |
| 31 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 32 | #include <linux/types.h> |
| 33 | #include <linux/module.h> |
| 34 | #include <linux/kernel.h> |
| 35 | #include <linux/delay.h> |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 36 | #include <linux/platform_device.h> |
| 37 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 38 | #include <linux/init.h> |
| 39 | #include <linux/ide.h> |
| 40 | #include <linux/sysdev.h> |
| 41 | |
| 42 | #include <linux/dma-mapping.h> |
| 43 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 44 | #include "ide-timing.h" |
| 45 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 46 | #include <asm/io.h> |
| 47 | #include <asm/mach-au1x00/au1xxx.h> |
| 48 | #include <asm/mach-au1x00/au1xxx_dbdma.h> |
| 49 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 50 | #include <asm/mach-au1x00/au1xxx_ide.h> |
| 51 | |
| 52 | #define DRV_NAME "au1200-ide" |
| 53 | #define DRV_VERSION "1.0" |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 54 | #define DRV_AUTHOR "Enrico Walther <enrico.walther@amd.com> / Pete Popov <ppopov@embeddedalley.com>" |
| 55 | |
| 56 | /* enable the burstmode in the dbdma */ |
| 57 | #define IDE_AU1XXX_BURSTMODE 1 |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 58 | |
| 59 | static _auide_hwif auide_hwif; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 60 | static int dbdma_init_done; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 61 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 62 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 63 | |
| 64 | void auide_insw(unsigned long port, void *addr, u32 count) |
| 65 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 66 | _auide_hwif *ahwif = &auide_hwif; |
| 67 | chan_tab_t *ctp; |
| 68 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 69 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 70 | if(!put_dest_flags(ahwif->rx_chan, (void*)addr, count << 1, |
| 71 | DDMA_FLAGS_NOIE)) { |
| 72 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 73 | return; |
| 74 | } |
| 75 | ctp = *((chan_tab_t **)ahwif->rx_chan); |
| 76 | dp = ctp->cur_ptr; |
| 77 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 78 | ; |
| 79 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 80 | } |
| 81 | |
| 82 | void auide_outsw(unsigned long port, void *addr, u32 count) |
| 83 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 84 | _auide_hwif *ahwif = &auide_hwif; |
| 85 | chan_tab_t *ctp; |
| 86 | au1x_ddma_desc_t *dp; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 87 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 88 | if(!put_source_flags(ahwif->tx_chan, (void*)addr, |
| 89 | count << 1, DDMA_FLAGS_NOIE)) { |
| 90 | printk(KERN_ERR "%s failed %d\n", __FUNCTION__, __LINE__); |
| 91 | return; |
| 92 | } |
| 93 | ctp = *((chan_tab_t **)ahwif->tx_chan); |
| 94 | dp = ctp->cur_ptr; |
| 95 | while (dp->dscr_cmd0 & DSCR_CMD0_V) |
| 96 | ; |
| 97 | ctp->cur_ptr = au1xxx_ddma_get_nextptr_virt(dp); |
| 98 | } |
| 99 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 100 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 101 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 102 | static void au1xxx_set_pio_mode(ide_drive_t *drive, const u8 pio) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 103 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 104 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 105 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 106 | /* set pio mode! */ |
| 107 | switch(pio) { |
| 108 | case 0: |
| 109 | mem_sttime = SBC_IDE_TIMING(PIO0); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 110 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 111 | /* set configuration for RCS2# */ |
| 112 | mem_stcfg |= TS_MASK; |
| 113 | mem_stcfg &= ~TCSOE_MASK; |
| 114 | mem_stcfg &= ~TOECS_MASK; |
| 115 | mem_stcfg |= SBC_IDE_PIO0_TCSOE | SBC_IDE_PIO0_TOECS; |
| 116 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 117 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 118 | case 1: |
| 119 | mem_sttime = SBC_IDE_TIMING(PIO1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 120 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 121 | /* set configuration for RCS2# */ |
| 122 | mem_stcfg |= TS_MASK; |
| 123 | mem_stcfg &= ~TCSOE_MASK; |
| 124 | mem_stcfg &= ~TOECS_MASK; |
| 125 | mem_stcfg |= SBC_IDE_PIO1_TCSOE | SBC_IDE_PIO1_TOECS; |
| 126 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 127 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 128 | case 2: |
| 129 | mem_sttime = SBC_IDE_TIMING(PIO2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 130 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 131 | /* set configuration for RCS2# */ |
| 132 | mem_stcfg &= ~TS_MASK; |
| 133 | mem_stcfg &= ~TCSOE_MASK; |
| 134 | mem_stcfg &= ~TOECS_MASK; |
| 135 | mem_stcfg |= SBC_IDE_PIO2_TCSOE | SBC_IDE_PIO2_TOECS; |
| 136 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 137 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 138 | case 3: |
| 139 | mem_sttime = SBC_IDE_TIMING(PIO3); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 140 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 141 | /* set configuration for RCS2# */ |
| 142 | mem_stcfg &= ~TS_MASK; |
| 143 | mem_stcfg &= ~TCSOE_MASK; |
| 144 | mem_stcfg &= ~TOECS_MASK; |
| 145 | mem_stcfg |= SBC_IDE_PIO3_TCSOE | SBC_IDE_PIO3_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 146 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 147 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 148 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 149 | case 4: |
| 150 | mem_sttime = SBC_IDE_TIMING(PIO4); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 151 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 152 | /* set configuration for RCS2# */ |
| 153 | mem_stcfg &= ~TS_MASK; |
| 154 | mem_stcfg &= ~TCSOE_MASK; |
| 155 | mem_stcfg &= ~TOECS_MASK; |
| 156 | mem_stcfg |= SBC_IDE_PIO4_TCSOE | SBC_IDE_PIO4_TOECS; |
| 157 | break; |
| 158 | } |
| 159 | |
| 160 | au_writel(mem_sttime,MEM_STTIME2); |
| 161 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 162 | } |
| 163 | |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 164 | static void auide_set_dma_mode(ide_drive_t *drive, const u8 speed) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 165 | { |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 166 | int mem_sttime = 0, mem_stcfg = au_readl(MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 167 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 168 | switch(speed) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 169 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 170 | case XFER_MW_DMA_2: |
| 171 | mem_sttime = SBC_IDE_TIMING(MDMA2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 172 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 173 | /* set configuration for RCS2# */ |
| 174 | mem_stcfg &= ~TS_MASK; |
| 175 | mem_stcfg &= ~TCSOE_MASK; |
| 176 | mem_stcfg &= ~TOECS_MASK; |
| 177 | mem_stcfg |= SBC_IDE_MDMA2_TCSOE | SBC_IDE_MDMA2_TOECS; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 178 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 179 | break; |
| 180 | case XFER_MW_DMA_1: |
| 181 | mem_sttime = SBC_IDE_TIMING(MDMA1); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 182 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 183 | /* set configuration for RCS2# */ |
| 184 | mem_stcfg &= ~TS_MASK; |
| 185 | mem_stcfg &= ~TCSOE_MASK; |
| 186 | mem_stcfg &= ~TOECS_MASK; |
| 187 | mem_stcfg |= SBC_IDE_MDMA1_TCSOE | SBC_IDE_MDMA1_TOECS; |
| 188 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 189 | break; |
| 190 | case XFER_MW_DMA_0: |
| 191 | mem_sttime = SBC_IDE_TIMING(MDMA0); |
| 192 | |
| 193 | /* set configuration for RCS2# */ |
| 194 | mem_stcfg |= TS_MASK; |
| 195 | mem_stcfg &= ~TCSOE_MASK; |
| 196 | mem_stcfg &= ~TOECS_MASK; |
| 197 | mem_stcfg |= SBC_IDE_MDMA0_TCSOE | SBC_IDE_MDMA0_TOECS; |
| 198 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 199 | break; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 200 | #endif |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 201 | default: |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 202 | return; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 203 | } |
Bartlomiej Zolnierkiewicz | a523a17 | 2007-02-17 02:40:23 +0100 | [diff] [blame] | 204 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 205 | au_writel(mem_sttime,MEM_STTIME2); |
| 206 | au_writel(mem_stcfg,MEM_STCFG2); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 207 | } |
| 208 | |
| 209 | /* |
| 210 | * Multi-Word DMA + DbDMA functions |
| 211 | */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 212 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 213 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 214 | |
| 215 | static int auide_build_sglist(ide_drive_t *drive, struct request *rq) |
| 216 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 217 | ide_hwif_t *hwif = drive->hwif; |
| 218 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 219 | struct scatterlist *sg = hwif->sg_table; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 220 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 221 | ide_map_sg(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 222 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 223 | if (rq_data_dir(rq) == READ) |
| 224 | hwif->sg_dma_direction = DMA_FROM_DEVICE; |
| 225 | else |
| 226 | hwif->sg_dma_direction = DMA_TO_DEVICE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 227 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 228 | return dma_map_sg(ahwif->dev, sg, hwif->sg_nents, |
| 229 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 230 | } |
| 231 | |
| 232 | static int auide_build_dmatable(ide_drive_t *drive) |
| 233 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 234 | int i, iswrite, count = 0; |
| 235 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 236 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 237 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 238 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 239 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
| 240 | struct scatterlist *sg; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 241 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 242 | iswrite = (rq_data_dir(rq) == WRITE); |
| 243 | /* Save for interrupt context */ |
| 244 | ahwif->drive = drive; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 245 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 246 | /* Build sglist */ |
| 247 | hwif->sg_nents = i = auide_build_sglist(drive, rq); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 248 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 249 | if (!i) |
| 250 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 251 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 252 | /* fill the descriptors */ |
| 253 | sg = hwif->sg_table; |
| 254 | while (i && sg_dma_len(sg)) { |
| 255 | u32 cur_addr; |
| 256 | u32 cur_len; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 257 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 258 | cur_addr = sg_dma_address(sg); |
| 259 | cur_len = sg_dma_len(sg); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 260 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 261 | while (cur_len) { |
| 262 | u32 flags = DDMA_FLAGS_NOIE; |
| 263 | unsigned int tc = (cur_len < 0xfe00)? cur_len: 0xfe00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 264 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 265 | if (++count >= PRD_ENTRIES) { |
| 266 | printk(KERN_WARNING "%s: DMA table too small\n", |
| 267 | drive->name); |
| 268 | goto use_pio_instead; |
| 269 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 270 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 271 | /* Lets enable intr for the last descriptor only */ |
| 272 | if (1==i) |
| 273 | flags = DDMA_FLAGS_IE; |
| 274 | else |
| 275 | flags = DDMA_FLAGS_NOIE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 276 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 277 | if (iswrite) { |
| 278 | if(!put_source_flags(ahwif->tx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame^] | 279 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 280 | tc, flags)) { |
| 281 | printk(KERN_ERR "%s failed %d\n", |
| 282 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 283 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 284 | } else |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 285 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 286 | if(!put_dest_flags(ahwif->rx_chan, |
Jens Axboe | 45711f1 | 2007-10-22 21:19:53 +0200 | [diff] [blame^] | 287 | (void*) sg_virt(sg), |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 288 | tc, flags)) { |
| 289 | printk(KERN_ERR "%s failed %d\n", |
| 290 | __FUNCTION__, __LINE__); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 291 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 292 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 293 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 294 | cur_addr += tc; |
| 295 | cur_len -= tc; |
| 296 | } |
Jens Axboe | 55c16a7 | 2007-07-25 08:13:56 +0200 | [diff] [blame] | 297 | sg = sg_next(sg); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 298 | i--; |
| 299 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 300 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 301 | if (count) |
| 302 | return 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 303 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 304 | use_pio_instead: |
| 305 | dma_unmap_sg(ahwif->dev, |
| 306 | hwif->sg_table, |
| 307 | hwif->sg_nents, |
| 308 | hwif->sg_dma_direction); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 309 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 310 | return 0; /* revert to PIO for this request */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 311 | } |
| 312 | |
| 313 | static int auide_dma_end(ide_drive_t *drive) |
| 314 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 315 | ide_hwif_t *hwif = HWIF(drive); |
| 316 | _auide_hwif *ahwif = (_auide_hwif*)hwif->hwif_data; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 317 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 318 | if (hwif->sg_nents) { |
| 319 | dma_unmap_sg(ahwif->dev, hwif->sg_table, hwif->sg_nents, |
| 320 | hwif->sg_dma_direction); |
| 321 | hwif->sg_nents = 0; |
| 322 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 323 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 324 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 325 | } |
| 326 | |
| 327 | static void auide_dma_start(ide_drive_t *drive ) |
| 328 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 329 | } |
| 330 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 331 | |
| 332 | static void auide_dma_exec_cmd(ide_drive_t *drive, u8 command) |
| 333 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 334 | /* issue cmd to drive */ |
| 335 | ide_execute_command(drive, command, &ide_dma_intr, |
| 336 | (2*WAIT_CMD), NULL); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 337 | } |
| 338 | |
| 339 | static int auide_dma_setup(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 340 | { |
| 341 | struct request *rq = HWGROUP(drive)->rq; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 342 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 343 | if (!auide_build_dmatable(drive)) { |
| 344 | ide_map_sg(drive, rq); |
| 345 | return 1; |
| 346 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 347 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 348 | drive->waiting_for_dma = 1; |
| 349 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 350 | } |
| 351 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 352 | static u8 auide_mdma_filter(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 353 | { |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 354 | /* |
| 355 | * FIXME: ->white_list and ->black_list are based on completely bogus |
| 356 | * ->ide_dma_check implementation which didn't set neither the host |
| 357 | * controller timings nor the device for the desired transfer mode. |
| 358 | * |
| 359 | * They should be either removed or 0x00 MWDMA mask should be |
| 360 | * returned for devices on the ->black_list. |
| 361 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 362 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 363 | if (dbdma_init_done == 0) { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 364 | auide_hwif.white_list = ide_in_drive_list(drive->id, |
| 365 | dma_white_list); |
| 366 | auide_hwif.black_list = ide_in_drive_list(drive->id, |
| 367 | dma_black_list); |
| 368 | auide_hwif.drive = drive; |
| 369 | auide_ddma_init(&auide_hwif); |
| 370 | dbdma_init_done = 1; |
| 371 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 372 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 373 | /* Is the drive in our DMA black list? */ |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 374 | if (auide_hwif.black_list) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 375 | printk(KERN_WARNING "%s: Disabling DMA for %s (blacklisted)\n", |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 376 | drive->name, drive->id->model); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 377 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 378 | return drive->hwif->mwdma_mask; |
| 379 | } |
| 380 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 381 | static int auide_dma_test_irq(ide_drive_t *drive) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 382 | { |
| 383 | if (drive->waiting_for_dma == 0) |
| 384 | printk(KERN_WARNING "%s: ide_dma_test_irq \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 385 | called while not waiting\n", drive->name); |
| 386 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 387 | /* If dbdma didn't execute the STOP command yet, the |
| 388 | * active bit is still set |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 389 | */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 390 | drive->waiting_for_dma++; |
| 391 | if (drive->waiting_for_dma >= DMA_WAIT_TIMEOUT) { |
| 392 | printk(KERN_WARNING "%s: timeout waiting for ddma to \ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 393 | complete\n", drive->name); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 394 | return 1; |
| 395 | } |
| 396 | udelay(10); |
| 397 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 398 | } |
| 399 | |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 400 | static void auide_dma_host_on(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 401 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 402 | } |
| 403 | |
| 404 | static int auide_dma_on(ide_drive_t *drive) |
| 405 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 406 | drive->using_dma = 1; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 407 | |
| 408 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 409 | } |
| 410 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 411 | static void auide_dma_host_off(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 412 | { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 413 | } |
| 414 | |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 415 | static void auide_dma_off_quietly(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 416 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 417 | drive->using_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 418 | } |
| 419 | |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 420 | static void auide_dma_lost_irq(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 421 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 422 | printk(KERN_ERR "%s: IRQ lost\n", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 423 | } |
| 424 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 425 | static void auide_ddma_tx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 426 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 427 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 428 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 429 | } |
| 430 | |
Ralf Baechle | 53e62d3 | 2006-09-25 23:32:10 -0700 | [diff] [blame] | 431 | static void auide_ddma_rx_callback(int irq, void *param) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 432 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 433 | _auide_hwif *ahwif = (_auide_hwif*)param; |
| 434 | ahwif->drive->waiting_for_dma = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 435 | } |
| 436 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 437 | #endif /* end CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
| 438 | |
| 439 | static void auide_init_dbdma_dev(dbdev_tab_t *dev, u32 dev_id, u32 tsize, u32 devwidth, u32 flags) |
| 440 | { |
| 441 | dev->dev_id = dev_id; |
| 442 | dev->dev_physaddr = (u32)AU1XXX_ATA_PHYS_ADDR; |
| 443 | dev->dev_intlevel = 0; |
| 444 | dev->dev_intpolarity = 0; |
| 445 | dev->dev_tsize = tsize; |
| 446 | dev->dev_devwidth = devwidth; |
| 447 | dev->dev_flags = flags; |
| 448 | } |
| 449 | |
| 450 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
| 451 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 452 | static void auide_dma_timeout(ide_drive_t *drive) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 453 | { |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 454 | ide_hwif_t *hwif = HWIF(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 455 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 456 | printk(KERN_ERR "%s: DMA timeout occurred: ", drive->name); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 457 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 458 | if (hwif->ide_dma_test_irq(drive)) |
| 459 | return; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 460 | |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 461 | hwif->ide_dma_end(drive); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 462 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 463 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 464 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 465 | static int auide_ddma_init(_auide_hwif *auide) { |
| 466 | |
| 467 | dbdev_tab_t source_dev_tab, target_dev_tab; |
| 468 | u32 dev_id, tsize, devwidth, flags; |
| 469 | ide_hwif_t *hwif = auide->hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 470 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 471 | dev_id = AU1XXX_ATA_DDMA_REQ; |
| 472 | |
| 473 | if (auide->white_list || auide->black_list) { |
| 474 | tsize = 8; |
| 475 | devwidth = 32; |
| 476 | } |
| 477 | else { |
| 478 | tsize = 1; |
| 479 | devwidth = 16; |
| 480 | |
| 481 | printk(KERN_ERR "au1xxx-ide: %s is not on ide driver whitelist.\n",auide_hwif.drive->id->model); |
| 482 | printk(KERN_ERR " please read 'Documentation/mips/AU1xxx_IDE.README'"); |
| 483 | } |
| 484 | |
| 485 | #ifdef IDE_AU1XXX_BURSTMODE |
| 486 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
| 487 | #else |
| 488 | flags = DEV_FLAGS_SYNC; |
| 489 | #endif |
| 490 | |
| 491 | /* setup dev_tab for tx channel */ |
| 492 | auide_init_dbdma_dev( &source_dev_tab, |
| 493 | dev_id, |
| 494 | tsize, devwidth, DEV_FLAGS_OUT | flags); |
| 495 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 496 | |
| 497 | auide_init_dbdma_dev( &source_dev_tab, |
| 498 | dev_id, |
| 499 | tsize, devwidth, DEV_FLAGS_IN | flags); |
| 500 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 501 | |
| 502 | /* We also need to add a target device for the DMA */ |
| 503 | auide_init_dbdma_dev( &target_dev_tab, |
| 504 | (u32)DSCR_CMD0_ALWAYS, |
| 505 | tsize, devwidth, DEV_FLAGS_ANYUSE); |
| 506 | auide->target_dev_id = au1xxx_ddma_add_device(&target_dev_tab); |
| 507 | |
| 508 | /* Get a channel for TX */ |
| 509 | auide->tx_chan = au1xxx_dbdma_chan_alloc(auide->target_dev_id, |
| 510 | auide->tx_dev_id, |
| 511 | auide_ddma_tx_callback, |
| 512 | (void*)auide); |
| 513 | |
| 514 | /* Get a channel for RX */ |
| 515 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 516 | auide->target_dev_id, |
| 517 | auide_ddma_rx_callback, |
| 518 | (void*)auide); |
| 519 | |
| 520 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 521 | NUM_DESCRIPTORS); |
| 522 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 523 | NUM_DESCRIPTORS); |
| 524 | |
| 525 | hwif->dmatable_cpu = dma_alloc_coherent(auide->dev, |
| 526 | PRD_ENTRIES * PRD_BYTES, /* 1 Page */ |
| 527 | &hwif->dmatable_dma, GFP_KERNEL); |
| 528 | |
| 529 | au1xxx_dbdma_start( auide->tx_chan ); |
| 530 | au1xxx_dbdma_start( auide->rx_chan ); |
| 531 | |
| 532 | return 0; |
| 533 | } |
| 534 | #else |
| 535 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 536 | static int auide_ddma_init( _auide_hwif *auide ) |
| 537 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 538 | dbdev_tab_t source_dev_tab; |
| 539 | int flags; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 540 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 541 | #ifdef IDE_AU1XXX_BURSTMODE |
| 542 | flags = DEV_FLAGS_SYNC | DEV_FLAGS_BURSTABLE; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 543 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 544 | flags = DEV_FLAGS_SYNC; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 545 | #endif |
| 546 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 547 | /* setup dev_tab for tx channel */ |
| 548 | auide_init_dbdma_dev( &source_dev_tab, |
| 549 | (u32)DSCR_CMD0_ALWAYS, |
| 550 | 8, 32, DEV_FLAGS_OUT | flags); |
| 551 | auide->tx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 552 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 553 | auide_init_dbdma_dev( &source_dev_tab, |
| 554 | (u32)DSCR_CMD0_ALWAYS, |
| 555 | 8, 32, DEV_FLAGS_IN | flags); |
| 556 | auide->rx_dev_id = au1xxx_ddma_add_device( &source_dev_tab ); |
| 557 | |
| 558 | /* Get a channel for TX */ |
| 559 | auide->tx_chan = au1xxx_dbdma_chan_alloc(DSCR_CMD0_ALWAYS, |
| 560 | auide->tx_dev_id, |
| 561 | NULL, |
| 562 | (void*)auide); |
| 563 | |
| 564 | /* Get a channel for RX */ |
| 565 | auide->rx_chan = au1xxx_dbdma_chan_alloc(auide->rx_dev_id, |
| 566 | DSCR_CMD0_ALWAYS, |
| 567 | NULL, |
| 568 | (void*)auide); |
| 569 | |
| 570 | auide->tx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->tx_chan, |
| 571 | NUM_DESCRIPTORS); |
| 572 | auide->rx_desc_head = (void*)au1xxx_dbdma_ring_alloc(auide->rx_chan, |
| 573 | NUM_DESCRIPTORS); |
| 574 | |
| 575 | au1xxx_dbdma_start( auide->tx_chan ); |
| 576 | au1xxx_dbdma_start( auide->rx_chan ); |
| 577 | |
| 578 | return 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 579 | } |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 580 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 581 | |
| 582 | static void auide_setup_ports(hw_regs_t *hw, _auide_hwif *ahwif) |
| 583 | { |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 584 | int i; |
| 585 | unsigned long *ata_regs = hw->io_ports; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 586 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 587 | /* FIXME? */ |
| 588 | for (i = 0; i < IDE_CONTROL_OFFSET; i++) { |
| 589 | *ata_regs++ = ahwif->regbase + (i << AU1XXX_ATA_REG_OFFSET); |
| 590 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 591 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 592 | /* set the Alternative Status register */ |
| 593 | *ata_regs = ahwif->regbase + (14 << AU1XXX_ATA_REG_OFFSET); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 594 | } |
| 595 | |
| 596 | static int au_ide_probe(struct device *dev) |
| 597 | { |
| 598 | struct platform_device *pdev = to_platform_device(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 599 | _auide_hwif *ahwif = &auide_hwif; |
| 600 | ide_hwif_t *hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 601 | struct resource *res; |
| 602 | int ret = 0; |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 603 | u8 idx[4] = { 0xff, 0xff, 0xff, 0xff }; |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 604 | hw_regs_t hw; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 605 | |
| 606 | #if defined(CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 607 | char *mode = "MWDMA2"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 608 | #elif defined(CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA) |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 609 | char *mode = "PIO+DDMA(offload)"; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 610 | #endif |
| 611 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 612 | memset(&auide_hwif, 0, sizeof(_auide_hwif)); |
| 613 | auide_hwif.dev = 0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 614 | |
| 615 | ahwif->dev = dev; |
| 616 | ahwif->irq = platform_get_irq(pdev, 0); |
| 617 | |
| 618 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 619 | |
| 620 | if (res == NULL) { |
| 621 | pr_debug("%s %d: no base address\n", DRV_NAME, pdev->id); |
| 622 | ret = -ENODEV; |
| 623 | goto out; |
| 624 | } |
David Vrabel | 4894473 | 2006-01-19 17:56:29 +0000 | [diff] [blame] | 625 | if (ahwif->irq < 0) { |
| 626 | pr_debug("%s %d: no IRQ\n", DRV_NAME, pdev->id); |
| 627 | ret = -ENODEV; |
| 628 | goto out; |
| 629 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 630 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 631 | if (!request_mem_region (res->start, res->end-res->start, pdev->name)) { |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 632 | pr_debug("%s: request_mem_region failed\n", DRV_NAME); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 633 | ret = -EBUSY; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 634 | goto out; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 635 | } |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 636 | |
| 637 | ahwif->regbase = (u32)ioremap(res->start, res->end-res->start); |
| 638 | if (ahwif->regbase == 0) { |
| 639 | ret = -ENOMEM; |
| 640 | goto out; |
| 641 | } |
| 642 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 643 | /* FIXME: This might possibly break PCMCIA IDE devices */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 644 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 645 | hwif = &ide_hwifs[pdev->id]; |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 646 | hwif->irq = ahwif->irq; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 647 | hwif->chipset = ide_au1xxx; |
| 648 | |
Bartlomiej Zolnierkiewicz | 9239b33 | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 649 | memset(&hw, 0, sizeof(hw)); |
| 650 | auide_setup_ports(&hw, ahwif); |
| 651 | memcpy(hwif->io_ports, hw.io_ports, sizeof(hwif->io_ports)); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 652 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 653 | hwif->ultra_mask = 0x0; /* Disable Ultra DMA */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 654 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 655 | hwif->mwdma_mask = 0x07; /* Multimode-2 DMA */ |
| 656 | hwif->swdma_mask = 0x00; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 657 | #else |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 658 | hwif->mwdma_mask = 0x0; |
| 659 | hwif->swdma_mask = 0x0; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 660 | #endif |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 661 | |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 662 | hwif->pio_mask = ATA_PIO4; |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 663 | hwif->host_flags = IDE_HFLAG_POST_SET_MODE; |
Bartlomiej Zolnierkiewicz | 4099d14 | 2007-07-20 01:11:59 +0200 | [diff] [blame] | 664 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 665 | hwif->noprobe = 0; |
| 666 | hwif->drives[0].unmask = 1; |
| 667 | hwif->drives[1].unmask = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 668 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 669 | /* hold should be on in all cases */ |
| 670 | hwif->hold = 1; |
Bartlomiej Zolnierkiewicz | 2ad1e55 | 2007-02-17 02:40:25 +0100 | [diff] [blame] | 671 | |
| 672 | hwif->mmio = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 673 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 674 | /* If the user has selected DDMA assisted copies, |
| 675 | then set up a few local I/O function entry points |
| 676 | */ |
| 677 | |
| 678 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 679 | hwif->INSW = auide_insw; |
| 680 | hwif->OUTSW = auide_outsw; |
| 681 | #endif |
| 682 | |
Bartlomiej Zolnierkiewicz | 26bcb87 | 2007-10-11 23:54:00 +0200 | [diff] [blame] | 683 | hwif->set_pio_mode = &au1xxx_set_pio_mode; |
Bartlomiej Zolnierkiewicz | 88b2b32 | 2007-10-13 17:47:51 +0200 | [diff] [blame] | 684 | hwif->set_dma_mode = &auide_set_dma_mode; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 685 | |
| 686 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 687 | hwif->dma_off_quietly = &auide_dma_off_quietly; |
Sergei Shtylyov | c283f5d | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 688 | hwif->dma_timeout = &auide_dma_timeout; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 689 | |
Bartlomiej Zolnierkiewicz | 8446f65 | 2007-10-16 22:29:54 +0200 | [diff] [blame] | 690 | hwif->mdma_filter = &auide_mdma_filter; |
| 691 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 692 | hwif->dma_exec_cmd = &auide_dma_exec_cmd; |
| 693 | hwif->dma_start = &auide_dma_start; |
| 694 | hwif->ide_dma_end = &auide_dma_end; |
| 695 | hwif->dma_setup = &auide_dma_setup; |
| 696 | hwif->ide_dma_test_irq = &auide_dma_test_irq; |
Bartlomiej Zolnierkiewicz | 7469aaf | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 697 | hwif->dma_host_off = &auide_dma_host_off; |
Bartlomiej Zolnierkiewicz | ccf3528 | 2007-02-17 02:40:26 +0100 | [diff] [blame] | 698 | hwif->dma_host_on = &auide_dma_host_on; |
Sergei Shtylyov | 841d2a9 | 2007-07-09 23:17:54 +0200 | [diff] [blame] | 699 | hwif->dma_lost_irq = &auide_dma_lost_irq; |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 700 | hwif->ide_dma_on = &auide_dma_on; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 701 | #else /* !CONFIG_BLK_DEV_IDE_AU1XXX_MDMA2_DBDMA */ |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 702 | hwif->channel = 0; |
| 703 | hwif->hold = 1; |
| 704 | hwif->select_data = 0; /* no chipset-specific code */ |
| 705 | hwif->config_data = 0; /* no chipset-specific code */ |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 706 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 707 | hwif->drives[0].autotune = 1; /* 1=autotune, 2=noautotune, 0=default */ |
Bartlomiej Zolnierkiewicz | a05e2fa | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 708 | hwif->drives[1].autotune = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 709 | #endif |
Bartlomiej Zolnierkiewicz | a05e2fa | 2007-10-20 00:32:33 +0200 | [diff] [blame] | 710 | hwif->drives[0].no_io_32bit = 1; |
| 711 | hwif->drives[1].no_io_32bit = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 712 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 713 | auide_hwif.hwif = hwif; |
| 714 | hwif->hwif_data = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 715 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 716 | #ifdef CONFIG_BLK_DEV_IDE_AU1XXX_PIO_DBDMA |
| 717 | auide_ddma_init(&auide_hwif); |
| 718 | dbdma_init_done = 1; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 719 | #endif |
| 720 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 721 | idx[0] = hwif->index; |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 722 | |
Bartlomiej Zolnierkiewicz | 8447d9d | 2007-10-20 00:32:31 +0200 | [diff] [blame] | 723 | ide_device_add(idx); |
Bartlomiej Zolnierkiewicz | 5cbf79c | 2007-05-10 00:01:11 +0200 | [diff] [blame] | 724 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 725 | dev_set_drvdata(dev, hwif); |
| 726 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 727 | printk(KERN_INFO "Au1xxx IDE(builtin) configured for %s\n", mode ); |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 728 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 729 | out: |
| 730 | return ret; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 731 | } |
| 732 | |
| 733 | static int au_ide_remove(struct device *dev) |
| 734 | { |
| 735 | struct platform_device *pdev = to_platform_device(dev); |
| 736 | struct resource *res; |
| 737 | ide_hwif_t *hwif = dev_get_drvdata(dev); |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 738 | _auide_hwif *ahwif = &auide_hwif; |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 739 | |
| 740 | ide_unregister(hwif - ide_hwifs); |
| 741 | |
| 742 | iounmap((void *)ahwif->regbase); |
| 743 | |
| 744 | res = platform_get_resource(pdev, IORESOURCE_MEM, 0); |
| 745 | release_mem_region(res->start, res->end - res->start); |
| 746 | |
| 747 | return 0; |
| 748 | } |
| 749 | |
| 750 | static struct device_driver au1200_ide_driver = { |
| 751 | .name = "au1200-ide", |
| 752 | .bus = &platform_bus_type, |
| 753 | .probe = au_ide_probe, |
| 754 | .remove = au_ide_remove, |
| 755 | }; |
| 756 | |
| 757 | static int __init au_ide_init(void) |
| 758 | { |
| 759 | return driver_register(&au1200_ide_driver); |
| 760 | } |
| 761 | |
Jordan Crouse | 8f29e65 | 2005-12-15 02:17:46 +0100 | [diff] [blame] | 762 | static void __exit au_ide_exit(void) |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 763 | { |
| 764 | driver_unregister(&au1200_ide_driver); |
| 765 | } |
| 766 | |
Pete Popov | 26a940e | 2005-09-15 08:03:12 +0000 | [diff] [blame] | 767 | MODULE_LICENSE("GPL"); |
| 768 | MODULE_DESCRIPTION("AU1200 IDE driver"); |
| 769 | |
| 770 | module_init(au_ide_init); |
| 771 | module_exit(au_ide_exit); |